Answer
$x=1,y=2+t, z=-t$
Work Step by Step
The parametric equation of a straight line is defined as $v=v_1i+v_2j+v_3k$, and when it passes through a point $P(x_0,y_0,z_0)$, it is given as:
$x=x_0+t v_1,y=y_0+t v_2; z=z_0+t v_3$
Here, $v=\lt 0,1,-1 \gt$ and $P=(1,2,0)$ .
Now, the parametric equations are:
$x=1+(0)t,y=2+t(1), z=0-t$
Hence, $x=1,y=2+t, z=-t$
